Theodolite is an instrument used for
(a) Tightening the capstan-headed nuts of level tube
(b) Measurement of horizontal angles only
(c) Measurement of vertical angles only
(d) Measurement of both horizontal and vertical angles*
(a) Tightening the capstan-headed nuts of level tube
(b) Measurement of horizontal angles only
(c) Measurement of vertical angles only
(d) Measurement of both horizontal and vertical angles*